1202020201 has 4 divisors (see below), whose sum is σ = 1204155792. Its totient is φ = 1199884612.

The previous prime is 1202020187. The next prime is 1202020213. The reversal of 1202020201 is 1020202021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1020202021 = 2843 ⋅358847.

It is a cyclic number.

It is not a de Polignac number, because 1202020201 - 2¹⁵ = 1201987433 is a prime.

It is a super-2 number, since 2×1202020201² = 2889705127224160802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202020271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066951 + ... + 1068076.

It is an arithmetic number, because the mean of its divisors is an integer number (301038948).

Almost surely, 2^1202020201 is an apocalyptic number.

It is an amenable number.

1202020201 is a deficient number, since it is larger than the sum of its proper divisors (2135591).

1202020201 is an equidigital number, since it uses as much as digits as its factorization.

1202020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135590.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1202020201 is about 34670.1629791381. The cubic root of 1202020201 is about 1063.2545637175.

Adding to 1202020201 its reverse (1020202021), we get a palindrome (2222222222).

It can be divided in two parts, 120202020 and 1, that added together give a palindrome (120202021).

The spelling of 1202020201 in words is "one billion, two hundred two million, twenty thousand, two hundred one".